There are 12 inches in a foot and three feet in a yard. how many inches are in 4 yards?

144

Step-by-step explanation:

12*3*4=144

12*3=36

36*4=144

u time 12 by 3 bc 12 in in a foot 3 ft in a yard then u times that by 4 then u get ur answer

144

90 = 30+10+3x

This equation shows that all the prices of the the bag, eraser, and pencils equals $90. So now all we have to do to find the price of a pencil is solve the equation.

First add the 30 and 10 together.

90 = 40+3x

Then subtract 40 from each side

50 = 3x

Lastly divide each side by 3

x = 16.67

The price per pencil is $16.67

Hope this helps!